NEW   Dual-Tube   Rebound Adjustable Shocks 

‘81’ series ‘DTA’: ALUMINUM body. Has exactly the same dimensions as the ‘61’ series.
(NO decrease in stroke, NO increase in length)
‘51’ series ‘DTAS’: Chrome Plated STEEL body. Otherwise same as ‘81’ series.

Each shock has six (6) separate adjustable Rebound valving positions.

Adjustment is done with a “hex key” (Allen wrench) through a “barrel valve” on the top of the cylinder head. 

The adjustment changes LOW Speed Rebound only it affects the weight transfer characteristics of the car basically going into and coming out of the corners. The high speed Rebound valving is not changed much - to preserve the ability of the tire to follow the track. Compression damping is not changed.

A small “hole” on the barrel valve lines up with the adjustment position so you can see when it is adjusted at any time. 


The adjustment mechanism’s positive detents leave no doubt where each position is. 
The barrel valve can be turned in either direction (stiffer or softer) and it has “perfect” repeatability in each position.

The part number specifies the basic valving. 
EX: 8175 (5175) has an Aluminum (Steel) body, 7" stroke and standard #5 valving in both Reb. and Comp.


Note: Hole lines up with Valving, #4 in this case.

One (1) 81 Series 'DTA' Shock will Replace Six (6) '61'

             
Note: Hole lines up with Valving, #4 in this case.
One (1) 81 Series 'DTA' Shock will Replace Six (6) '61' Series
Example:  8174-27

Replaces:   6172/4
                   6173/4
                6174
                   6175/4
                   6176/4
                   6177/4
List Prices:
81 series - $299.95 each
51 series - $279.95 each
The “type” of barrel valve appears as a “SUFFIX” on the part number (describing the range: lowest and highest rebound valving).
EX: 8175-27 (5175-27) has a “27” barrel valve (goes from #2 through #7 rebound).

There are four (4) standard “barrel valves”. They are available with any standard stroke and/or valving.
“27” offers a wide “UNIVERSAL” range: 2-3-4-5-6 & 7 Rebound Valving.
“465” offers a “FINE TUNING” range: 4-41/2-5-51/2-6 & 61/2 Rebound Valving.
“49” offers a fairly wide “Sprint Car” range: 4-41/2-5-6-7 & 9 Rebound Valving.
“411” offers a wide “LM Asphalt” range: 4-5-6-7-9 & 11 Rebound Valving.

The range can be from 05 (½) through 12 valving. Any combination of six (6) valvings are available on special order (additional cost). 

Suggested Applications (for STEEL body Change 1st digit to "5")
Sprints
LF
8174-27 #4 Comp., 2-3-4-5-6-7 Reb.
8175-27 #5 Comp., "
RF 
8174-27 #4 Comp., 2-3-4-5-6-7 Reb.
8175-27 #5 Comp., "
LR
8194-49 #4 Comp., 4-41/2,5-6-7-9 Reb.
8195-49 #5 Comp., "
RR
8194-49 #4 Comp., 4-41/2,5-6-7-9 Reb.
8195-49 #5 Comp., "

Dirt LM
LF
8174-27 #4 Comp., 2-3-4-5-6-7 Reb.
8175-27 #5 Comp., "
8175/3-27 #5 Reb., #3 Comp., "
RF
8174-27 #4 Comp., 2-3-4-5-6-7 Reb.
8175-27 #5 Comp., "
8175/3-27 #5 Reb., #3 Comp., "
LR
8194-27 #4 Comp., 2-3-4-5-6-7 Reb.
8195-27 #5 Comp., "
8195/3-27 #5 Reb., #3 Comp., "
RR
8194-27 #4 Comp., 2-3-4-5-6-7 Reb.
8195-27 #5 Comp., "
8195/3-27 #5 Reb., #3 Comp., "

 Asphalt LM
LF
8175-411 #5 Comp., 4-5-6-7-9-11 Reb.
8176-411 #6 Comp., "
RF
8175-411 #5 Comp., 4-5-6-7-9-11 Reb.
8176-411 #6 Comp., "
LR (7" stroke)
8174-465 #4 Comp., 4-41/2-5-51/2-6-61/2 Reb.
81745-465 #41/2 Comp., "
8175-465 #5 Comp., "
RR (7" stroke)
8174-465 #4 Comp., 4-41/2-5-51/2-6-61/2 Reb.
81745-465 #41/2 Comp., "
8175-465 #5 Comp., "
LR (9" stroke)
8194-465 #4 Comp., 4-41/2-5-51/2-6-61/2 Reb.
81945-465 #41/2 Comp., "
8195-465 #5 Comp., "
RR (9" stroke)
8194-465 #4 Comp., 4-41/2-5-51/2-6-61/2 Reb.
81945-465 #41/2 Comp., "
8195-465 #5 Comp., "
Following are some of what we THINK will be "Good Numbers":



Part #        Stroke        Base Valving                 Adjustment Range                   Application
8174-27        7"              #4 Comp.                         2-3-4-5-6-7 Reb.              Universal front and rear
8174-465      7"              #4 Comp.                 4-41/2-5-51/2-6-61/2 Reb.      Fine-Tune front and rear
81745-465    7"              #41/2 Comp.            4-41/2-5-51/2-6-61/2 Reb.      Fine-Tune front and rear
8175-27        7"              #5 Comp.                        2-3-4-5-6-7 Reb.               Universal front and rear
8175-411      7"              #5 Comp.                       4-5-6-7-9-11 Reb.                Asphalt LM Front
8175-465      7"              #5 Comp.                 4-41/2-5-51/2-6-61/2 Reb.        Asphalt LM Rear
8175/3-27     7"              #5 Reb.,#3 Comp..         2-3-4-5-6-7 Reb.                  Dirt LM Front
8176-411      7"              #6 Comp.                       4-5-6-7-9-11 Reb.               Asphalt LM Front
8194-27        9"              #4 Comp.                        2-3-4-5-6-7 Reb.                 Dirt LM Rear
8194-465      9"              #4 Comp.                 4-41/2-5-51/2-6-61/2 Reb.         Fine-Tune Rear
8194-49        9"              #4 Comp.                 4-41/2-5-6-7-9 Reb.                   Sprint Car Rear
81945-465    9"              #41/2 Comp.            4-41/2-5-51/2-6-61/2 Reb.         Fine-Tune Rear
8195-27        9"              #5 Comp.                        2-3-4-5-6-7 Reb.                  Dirt LM Rear
8195-465      9"              #5 Comp.                 4-41/2-5-51/2-6-61/2 Reb.         Fine-Tune Rear
8195-49        9"              #5 Comp.                 4-41/2-5-6-7-9 Reb.                   Sprint Car Rear
8195/3-27     9"              #5 Reb., #3 Comp.          2-3-4-5-6-7 Reb.                 Dirt LM Rear

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